Filter



oct. 6,1925. f 1,556,426

l W. L. COOP FILTER Filed Deve. Es- 1924 l" 7 //jn lll///l/l/l. ATTOR Yf BY Patented Oct. 6, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM I. COOP, OF DETROIT', MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS;TO BRIGHTON MA'NUFACTURING' COMPANY, A CORPORATION OF MICHIGAN.

FILTER.

Application filed December To all whom t mayy concern:

Be it known that I, WILLIAM L. Goor, a.citizen of the United States, andresident of Detroit, in the county of Vayne and State of Michigan, haveinvented new and useful Improvements in Filters, of which the followingis a specification.

This invention relates to an apparatus for eliminating rapidlyprecipitates, impurities, etc.. from liquidssupporting same, such asmuddy water` cloudy cider, yeasty beer, ier. inented wine. or any liquidnow filtered by gravity through the usual filter paper or itsequivalent.

The principal object of my invention is the rapid forcing of suchliquids through a series of filter members arranged to eliminate allprecipitates and other solid particles, while preventing the packing ofsuch precipitates, etc. on the surface of the filter.

Another object of my invention is the arrangement of a plurality offilter members in vertical position between a pump and outlet withprovisions for readily removing and renewing the filter members.

A further object of my invention is the construction of a filter andhandpuinp combined that is of extreme simplicity in design andoperation, and which is comparatively inexpensive to produce.

Other objects and advantages-will be apparent from the followingdescription, wherein reference is made to the accompanying drawingsillustrating a preferred embodiment of my invention and wherein similarreference numerals designate similar parts throughout the several views.

In the drawings:

Fig. l is a side elevation of my improved filter'. with parts brokenaway and shown in section.

Fig. 2 is a central vertical section therethrough.

Fig. 3 is an enlarged detail view ofthe pump valves andadjacentmechanism, and

Fig. 4 is a detail section taken substantially on the line 4 4 of Fig.3.

Referring now to the drawings, the numeral.5 designates a main bodymember substantially circular in contour with a plurality of'ears 6arranged in circumfe'rentially spaced pairs about its periphery. Thebody member 5 is of dished formation with its central portion in avertical plane remote from the plane of its peripheral edge,

8, 1924. Serial No. 754,462.

whereby a space is providedfor the passage of the liquid to be filteredand for storing the precipitates while allowing the use of theperipheral edge of the body memberfor clamping purposes, as hereinafterLdescribed. The body member 5 is preferably formedias a cast-ing with apump barrel 7 integral therewith, the pump barrel being arrangedsubstantially centrally offthe body member and open at its upperextremity to facilitate machining (note F igs. 1 and 2). The lowerportion of the pump barrel 7 is connected with the lower portion ofthebody member 5 by means of the vertically arranged passage 8 opening atits upper extremity into the pump barrel and the inclined passage 9extending from the lower portion ofthe vertical passage 8 into the bodyportion 5. As best illustrated in Fig. 3 I preferably core the verticalpassage 8 through the lower extremity of the casting, and. then plug thebottom of the passage with a snugly fitting plug 10. A ballll normallyseats in the passage 9 so as to prevent the dow of liquid downwardlythrough the passage 9, but whensufiicient, force is applied through thepump the ball 11 is automatically lifted from itsseat to permit the owof liquidupwardly through the passage 9. Liquid is admitted to the pumpbarrel through an inletpipe 12 opening into an inclined passage 13.communicating with the lower extremity of the vertical passage 14, whichopensinto the lower portion ofthe pump barrel 7. A ball 15 normallyseatstin the vertical passage 14 so as to preventthe ow of liquiddownwardly through this passage, but when sufficient suction isengendered within the pump barrel, `the ball 15 is lifted to permit thepassage of liquid into the pump barrel. A pin 16 is preferably ar.-ranged across the upper extremities ofthe passages 9 and 14vto preventthe accidental movementA of the balls 11 and 15 beyondr the extremitiesof their passages.

The piston 17 comprises a disc 18V secured to the lower extremity ofafbent wire handle member 19 and formedwithakeyhole slot 22 for thereception of a button 20 molded `or otherwise firmly secured in arubberpacking member 21 adaptedto snuglfi7 fit against the internal wall ofthe pump chamber. As best shown inFigs. 1.-?) the rubber packing member21 is preferably formed with an elongated peripheralV portion of rubber,fiber or other suitable material, with a diaphragm 21a formedsubstantially centrally thereof and having an enlarged central portionfor the reception of the fastening button 20. By virtue of thisconstruction the rubber packing member may be quickly secured upon themetal disc 18, and as quickly removed for cleansing. The handle member19 is herein shown as comprising a single strip of wire bentsubstantially centrally of its length to form a hand engaging portionwith a pair of parallel end portions adapted to be riveted or otherwisesecured to the metal disc 18. This provides a secure method of fasteningthe disc 18 to the handle member while permitting the arrangement of thekeyhole slot 22 in the central portion of the disc. The verticalportions of the handle member 19 pass through suitable bosses in a coverplate 23 adapted to be screwed or otherwise secured over the top of thepump chamber.

A securing bolt 24 is pivotally mounted between each pair of ears 6 onthe body member and is adapted to pass through suitably alignedapertures in a cover member 25, the free ends of the bolts beingthreaded to receive the thumb screws 26 or the like. The cover member 25is preferably dished substantially as shown in Figs. 2 and 3 and formedwith a curved peripheral portion for engagement with the filter members27, as hereinafter described.` The filter members 27 may be formed of aplurality of sheets of filter paper 28 or the like backed by aperforated metallic plate 29 (note Fig. 1) and are superimposed one uponthe other and their edges covered with a ring 30 of rubber or the like.As best shown in Fig. 3 the rubber ring 30 is adapted to overlie theperiphery and adjacent portions of the several sheets of filter materialso as to preserve them in accurate alignment, and also forms acushioning member for sealing the edges of the filter member againstleakage when the cover member 25 is suitably clamped upon the bodymember 5 of my improved apparatus. The cover member 25 carries an outletpipe 31 adjacent its upper extremity whereby the clear liquid is adaptedto pass out of the filter.

.To assemble my improved filter, the desired number of sheets of filterpaper 28 are laid upon the perforated metallic sheet 29 and firmlysecured thereto by the rubber ring 30. The filtering unit is then heldagainst the peripheral edge portion of the body member 5 and the coverplate 25 then mounted on the plurality of securing bolts 24 so as tobring its peripheral portion into engagement with the opposite side ofthe rubber ring 30. The thumb nuts 26 are then turned down until thefiltering unit is firmly clamped between the cover member and the bodyportion of the apparatus.

In operation the inlet pipe 12 is suitably connected with a jar, barrel,etc. containing the liquid to be filtered and the outlet pipe 31suitably connected with the receptacle for the clear liquid. Then thehandle member 19 of the pump is grasped and the plunger reciprocated asrapidly as desired. On the upstroke of the plunger the liquid to befiltered is drawn through the inlet pipe 12 and passages 13 and 14 intothe pump barrel, and upon the down movement of the pump plunger theliquid then in the pump barrel is forced through the passages 8 and 9into the body portion 5 of the apparatus, whence it passes through thefiltering unit into thc dished cover plate 25. The balls 15 and 11 movetoward and from their seats in accordance with the pressure thereon dueto the movement of the pump plunger. As the quantity of liquid in thebody portion 5 of the apparatus increases, the pressure increases toforce the liquid through the filtering unit and out through the pipe 31.The constant intake of new liquid adjacent the bottom of the bodyportion 5 prevents the settling of the precipitates so as to choke thepassa ge 9. and the circulation in the body portion as new liquid isadmitted prevents the precipita-ifea so attaching themselves to thesurface of the filtering unit as to block the passage of the clearliquid therethrough. The vertical arrangement of the filtering unit alsoserves to prevent the attachment of the solid particles on the surfaceof the unit.

It has been found that as the pressure increases the filtering unittends to bow toward the cover plate 25, and I preferably provide aseries of radial ribs 32 on the inner wall of the cover plate inposition to be contacted by the metallic plate 29 of the filtering unitwhen sufficiently bowed. This reinforces the filtering unit whileleaving sufficient space between the inner wall of the cover plate andthe filtering unit to permit the passage of the clear liquid to theoutlet pipe 31.

The base of the body portion 5 is preferably formed with oppositelyextending feet 33 to provide sufficient support for the apparatus toprevent accidental toppling of the apparatus during the pumping action.A foot 34 may also be formed with or suitably secured upon the coverplate 25 and extends at right angles to the feet 33 of the body portionto give a wider base with a minimum weight. As shown in Fig. 1 the basemay be perforated to provide for the passage of the lowermost securingbolts 24a in lieu of forming spaced ears at this portion of theapparatus.

While it will be apparent that the illustrated embodiment of myinvention herein disclosed is well calculated to adequately fulfill theobjects and advantages primarily stated, it is to be understood that theinvention is susceptible to variation, modification and change withinthe spirit and scope of the subjoined claims.

Having described my invention, I claim:

l. Filtering apparatus comprising a hand pump carrying a body portionhaving a vertically disposed clamping edge, a cover portion having avertically disposed clamping edge, a filtering unit adapted to be heldbetween said clamping edges, means for drawing one of the clamping edgestoward the other, an inlet for liquids to the pump, an intermediatepassageway from the pump to the body portion, and an outlet pipe carriedby the cover portion.

2. Filtering apparatus comprising a hand pump carrying a dished bodyportion having a vertically disposed clamping edge, a dished coverportion having a vertically disposed clamping edge, clamping boltscarried by one of' said portions and passing through apertures in theother of said portions, a filtering unit adapted to be secured betweensaid clamping edges, means on said bolts for drawing one of the clampingedges toward the other, an inlet for liquids to the pump, anintermediate passageway from the pump to the lower extremity of the bodyportion, and an outlet pipe secured in the upper extremity of the coverportion.

3. Filtering apparatus comprising a hand pump carrying a dished bodyportion having a vertically disposed clamping edge, a dished coverportion having a vertically disposed clamping edge, clamping boltscarried by one of said portions and passing through apertures in theother of said portions, a filtering unit adapted to be secured betweensaid clamping edges, including a perforated metallic plate and aplurality of layers of filter paper, means on said bolts for drawing oneof the clamping edges toward the other, an inlet for liquids to thepump, an intermediate passageway from the pump to the lower extremity ofthe body portion, and an outlet pipe secured in the upper extremity ofthe cover portion.

4. Filtering apparatus comprising a hand pump carrying a dished bodyportion having a vertically disposed clamping edge, a dished coverportion having a verticallyv disposed clamping edge, clamping boltscarried by one of said portions and passing through apertures in theother of said portions, a filtering unit adapted to be secured betweensaid clamping edges, including a perforated metallic plate and aplurality of layers of filter paper, means on said bolts for drawing oneof the clamping edges toward the other, an inlet for liquids to thepump, an intermediate passageway from the pump to the lower extremity ofthe body portion, and an outlet pipe secured in the upper extremity ofthe cover portion, the cover portion being formed with spaced internalribs adapted to limit the bowing of the filtering unit under pressure.

5. Filtering apparatus comprising a hand pump carrying a dished bodyportion having a vertically disposed clamping edge, a dished coverportion having a vertically disposed clamping edge, clamping boltscarried by one of said portions and passing through apertures in theother of' said portions,a filtering unit adapted to be secured betweensaid clamping edges, means on said bolts for drawing one of' theclamping edges toward the other, an inlet for liquids to the pump, anintermediate passageway from the pump to the lower extremity of the bodyportion, an outlet pipe secured in the upper extremity of' the coverportion, oppositely extending feet on the body portion, and a laterallyextending f'oot on the cover portion.

In witness whereof' I hereunto set my hand and seal.

WILLIAM L. oooP. [La]

